Síntese de zeólitas a partir de resíduos classe II da indústria do petróleo

Abstract

Of the more than 255 zeolithic structures known today, only ten (10) are manufactured industrially. This is because many of the syntheses are not optimized or are too expensive to scale. To enable more structures to be produced industrially, the costs of synthesis can be reduced by replacing traditional reagents with alternative sources of Si and Al. Among the alternative sources of Si and Al, natural materials such as clay minerals, industrial waste, among others, can be employed. In this work is proposed the use of fragmented materials and displaced by the drill to surface, solid residues of drilling of oil wells called gravel, also known as gravel sample. The zeolite to be obtained using this residue was initially the LTA zeolyte. The materials obtained, as well as the starting ones, were characterized by X-ray diffraction, x-ray fluorescence, scanning electron microscopy and CO2 adsorptions. As a result, it was possible to observe the formation of zeolithic materials by identifying the Bragg reflections characteristic of the characteristic cubic morphology of the Zeolite LTA. The Si/Al ratio of the samples resulted near the unit, as expected for this topology. The work sought to develop a procedure to enable the use of waste from the standard procedure of synthesis of zeolite LTL seeking to increase the range of possibility of use of the waste. In this work the review shows in a broad way the control, treatment, and final destination of waste as its reuse in different areas.